You don't have to look far to find people who feel secure about the future because they think they're a good person, while others feel secure because they've convinced themselves that a 'God of Love' could never judge anyone.  The Jews felt secure about their future simply because they were Jews or how they were raised in the Temple, much like people thinking they're a Christian just because they go to church every Sunday!  The problem with all of these reasons and others is that it is a "False Security."